I think it has to be accepted that what that person will do in your absence will be far less than what you are capable of doing – essentially they are providing an emergency service. We had a similar situation and one of my colleagues put together a “front end” so the temporary person has a reduced access password which brings up this screen where they then click on certain boxes eg. LSTF, LSTS, DIPM etc. The front end has text descriptions of the buttons so is as un-tchnical as it can be. I suspect that approach with a short operational note would give a good starting point.
Drop me an email at ianwallisderby.gov.uk and I can give more information.
Has anyone out there ever been asked to write an idiots guide to running your UTC system, diagnosing and fixing faults etc? I’ve been asked to, for those times I will be off work for any reason. We don’t have a huge system, but we don’t have anyone with any traffic signal experience either. Besides me. It’s difficult to get the point across that you need a bit of experience.